together_mobile/lib/models/websocket_model.dart

458 lines
13 KiB
Dart

import 'dart:async';
import 'dart:convert';
import 'dart:io';
import 'package:flutter/material.dart';
import 'package:hive_flutter/hive_flutter.dart';
import 'package:web_socket_channel/web_socket_channel.dart';
import 'package:web_socket_channel/status.dart' as status;
import 'package:together_mobile/models/route_state_model.dart';
import 'package:together_mobile/database/box_type.dart';
import 'package:together_mobile/models/apply_list_model.dart';
import 'package:together_mobile/models/contact_model.dart';
import 'package:together_mobile/models/init_get_it.dart';
import 'package:together_mobile/models/user_model.dart';
import 'package:together_mobile/notification_api.dart';
enum SocketStatus {
connected,
reconnecting,
error,
closed,
}
class WebSocketManager extends ChangeNotifier {
late Uri wsUrl;
late WebSocketChannel channel;
String id = '';
SocketStatus socketStatus = SocketStatus.closed;
Timer? heartBeatTimer;
Timer? serverTimer;
Timer? reconnectTimer;
int reconnectCount = 5;
int reconnectTimes = 0;
Duration heartBeatTimeout = const Duration(seconds: 4);
Duration reconnectTimeout = const Duration(seconds: 3);
void connect(String userId, bool isReconnect) {
id = userId;
wsUrl = Uri.parse('ws://10.0.2.2:8000/ws/$id?is_reconnect=$isReconnect');
if (isReconnect) {
socketStatus = SocketStatus.reconnecting;
notifyListeners();
}
// This doesn't blcok the programe whethe it connect the server or not
// So heartBeat will be executre straightly
channel = WebSocketChannel.connect(wsUrl);
heartBeatInspect();
channel.stream.listen(onData, onError: onError, onDone: onDone);
}
void disconnect() {
channel.sink.close();
wsUrl = Uri();
id = '';
socketStatus = SocketStatus.closed;
notifyListeners();
heartBeatTimer?.cancel();
serverTimer?.cancel();
reconnectTimer?.cancel();
heartBeatTimer = null;
serverTimer = null;
reconnectTimer = null;
reconnectTimes = 0;
}
void onData(jsonData) {
// If socket can receive msg, that means connection is estabilished
socketStatus = SocketStatus.connected;
notifyListeners();
print('websocket connected <$channel>');
if (reconnectTimer != null) {
reconnectTimer!.cancel();
reconnectTimer = null;
reconnectTimes = 0;
}
heartBeatInspect();
Map<String, dynamic> data = json.decode(jsonData);
switch (data['event']) {
case 'friend-chat-msg':
receiveFriendMsg(data, true);
case 'apply-friend':
receiveApplyFriend(data);
case 'friend-added':
receiveFriendAdded(data);
case 'friend-deleted':
receiveFriendDeleted(data);
case 'chat-image':
receiveChatImages(data);
case 'group-chat-creation':
receiveGroupChatCreation(data);
case 'group-chat-msg':
receiveGroupChatMsg(data, true);
}
}
// This will be trigger while server or client close the connection
// for example server is restarting
void onDone() {
print('websocket disconnected <$channel>');
print('22222222222222222222');
if (socketStatus == SocketStatus.closed) {
// Client close the connection
return;
}
if (socketStatus == SocketStatus.connected) {
// Server close the connection
socketStatus = SocketStatus.reconnecting;
notifyListeners();
print(111111111111111);
reconnectTimes++;
reconnect();
}
if (reconnectTimes >= reconnectCount) {
socketStatus = SocketStatus.error;
reconnectTimes = 0;
} else {
socketStatus = SocketStatus.reconnecting;
print('3333333333333333333');
notifyListeners();
}
}
// This will be trigger while server exactly shutdown
void onError(Object error, StackTrace st) {
print('Websocket connect occurs error: <$error>');
// print(st);
if (reconnectTimes >= reconnectCount) {
socketStatus = SocketStatus.error;
notifyListeners();
channel.sink.close();
if (heartBeatTimer != null) {
heartBeatTimer!.cancel();
heartBeatTimer = null;
}
} else {
print('${reconnectTimes}th reconnection');
reconnect();
}
}
void heartBeatInspect() {
print('start heartbeat inspect......');
if (heartBeatTimer != null) {
heartBeatTimer!.cancel();
heartBeatTimer = null;
}
if (serverTimer != null) {
serverTimer!.cancel();
serverTimer = null;
}
heartBeatTimer = Timer(heartBeatTimeout, () {
channel.sink.add(json.encode({'event': 'ping'}));
serverTimer = Timer(heartBeatTimeout, () {
// This will trigger the onDone callback
channel.sink.close(status.internalServerError);
socketStatus = SocketStatus.reconnecting;
notifyListeners();
});
});
}
void reconnect() {
if (heartBeatTimer != null) {
heartBeatTimer!.cancel();
heartBeatTimer = null;
}
if (serverTimer != null) {
serverTimer!.cancel();
serverTimer = null;
}
if (reconnectTimer != null) {
reconnectTimer!.cancel();
reconnectTimer = null;
}
reconnectTimer = Timer(reconnectTimeout, () {
if (reconnectTimes < reconnectCount) {
print('websocket reconnecting......');
reconnectTimes++;
connect(id, true);
} else {
print('reconnection times exceed the max times......');
// If it is still disconnection after reconnect 30 times, set the socket
// status to error, means the network is bad, and stop reconnecting.
socketStatus = SocketStatus.error;
notifyListeners();
channel.sink.close();
}
});
}
}
void receiveFriendMsg(Map<String, dynamic> msg, bool isShowNotification) async {
print('=================收到了好友信息事件==================');
print(msg);
print('=======================================');
String senderId = msg['senderId'] as String;
late Box<MessageT> messageTBox;
try {
messageTBox = Hive.box('message_$senderId');
} catch (e) {
messageTBox = await Hive.openBox('message_$senderId');
}
Box<ChatSetting> chatSettingBox = Hive.box<ChatSetting>('chat_setting');
ChatSetting? chatSetting = chatSettingBox.get(senderId);
DateTime dateTime = DateTime.parse(msg['dateTime'] as String);
if (chatSetting == null) {
chatSettingBox.put(
senderId,
ChatSetting(
senderId,
0,
false,
true,
false,
dateTime,
1,
),
);
} else if ((messageTBox.get(msg['msgId'] as String)) != null) {
return;
} else {
chatSetting.isOpen = true;
chatSetting.latestDateTime = dateTime;
chatSetting.unreadCount++;
chatSettingBox.put(senderId, chatSetting);
}
List<String> attachments = List.from(msg['attachments']);
final DateTime now = DateTime.parse(msg['dateTime'] as String);
messageTBox.put(
msg['msgId'] as String,
MessageT(
senderId,
msg['text'],
msg['type'],
now,
msg['isShowTime'],
attachments,
),
);
if (!isShowNotification) {
return;
}
String name = getIt.get<Contact>().friends[senderId]!.friendRemark.isEmpty
? getIt.get<ContactAccountProfile>().friends[senderId]!.nickname
: getIt.get<Contact>().friends[senderId]!.friendRemark;
String routeName = getIt.get<RouteState>().currentPathName;
String avatar = getIt.get<ContactAccountProfile>().friends[senderId]!.avatar;
if (!getIt.get<RouteState>().isVisible) {
NotificationAPI.showMessageNotifications(
senderId: senderId,
name: name,
avatar: avatar,
text: msg['text'] as String,
);
} else if (routeName == 'Message') {
if (!getIt.get<RouteState>().query.containsValue(senderId)) {
NotificationAPI.showMessageNotifications(
senderId: senderId,
name: name,
avatar: avatar,
text: msg['text'] as String,
);
}
} else if (routeName != 'Chat') {
NotificationAPI.showMessageNotifications(
senderId: senderId,
name: name,
avatar: avatar,
text: msg['text'] as String,
);
}
}
void receiveApplyFriend(Map<String, dynamic> msg) {
print('=================收到了申请好友事件==================');
print(msg);
print('=======================================');
getIt.get<ApplyList>().addJson(msg);
}
void receiveFriendAdded(Map<String, dynamic> msg) {
print('=================收到了申请好友通过事件==================');
print(msg);
print('=======================================');
getIt.get<Contact>().addFriend(msg['friendId'], msg['setting']);
getIt
.get<ContactAccountProfile>()
.addFriendAccountProfile(msg['friendId'], msg['accountProfile']);
}
void receiveFriendDeleted(Map<String, dynamic> msg) {
print('=================收到了解除好友事件==================');
print(msg);
print('=======================================');
getIt.get<Contact>().removeFriend(msg['friendId']);
getIt.get<ContactAccountProfile>().removeFriend(msg['friendId']);
}
void receiveChatImages(Map<String, dynamic> msg) async {
print('=================收到了聊天图片事件==================');
print(msg);
print('=======================================');
String chatImageDir = getIt.get<UserProfile>().baseImageDir;
File file = File('$chatImageDir/${msg['filename']}');
if (await file.exists()) {
return;
} else {
await file.create(recursive: true);
await file.writeAsBytes(List<int>.from(msg['bytes']));
}
}
void receiveGroupChatCreation(Map<String, dynamic> msg) {
print('=================收到了群聊邀请事件==================');
print(msg);
print('=======================================');
String groupChatId = msg['groupChat']['id'];
getIt.get<Contact>().addGroupChat(groupChatId);
getIt.get<ContactAccountProfile>().addGroupChatProfile(groupChatId, msg);
}
void receiveGroupChatMsg(
Map<String, dynamic> msg, bool isShowNotification) async {
print('=================收到了群聊信息事件==================');
print(msg);
print('=======================================');
String senderId = msg['senderId'] as String;
String groupChatId = msg['groupChatId'] as String;
late Box<MessageT> messageTBox;
try {
messageTBox = Hive.box('message_$groupChatId');
} catch (e) {
messageTBox = await Hive.openBox('message_$groupChatId');
}
Box<ChatSetting> chatSettingBox = Hive.box<ChatSetting>('chat_setting');
ChatSetting? chatSetting = chatSettingBox.get(groupChatId);
DateTime dateTime = DateTime.parse(msg['dateTime'] as String);
getIt.get<ContactAccountProfile>().addGroupChatMemberProfile(
groupChatId,
msg['senderId'],
{
'avatar': msg['avatar'],
'nickname': msg['nickname'],
'remarkInGroupChat': msg['remarkInGroupChat'],
},
);
if (chatSetting == null) {
chatSettingBox.put(
groupChatId,
ChatSetting(
groupChatId,
1,
false,
true,
false,
dateTime,
1,
),
);
} else if ((messageTBox.get(msg['msgId'] as String)) != null) {
return;
} else {
chatSetting.isOpen = true;
chatSetting.latestDateTime = dateTime;
chatSetting.unreadCount++;
chatSettingBox.put(groupChatId, chatSetting);
}
List<String> attachments = List.from(msg['attachments']);
final DateTime now = DateTime.parse(msg['dateTime'] as String);
messageTBox.put(
msg['msgId'] as String,
MessageT(
senderId,
msg['text'],
msg['type'],
now,
msg['isShowTime'],
attachments,
),
);
if (!isShowNotification) {
return;
}
String avatar =
getIt.get<ContactAccountProfile>().groupChats[groupChatId]!.avatar;
late String name;
if (getIt.get<Contact>().friends.containsKey(senderId)) {
if (getIt.get<Contact>().friends[senderId]!.friendRemark.isNotEmpty) {
name = getIt.get<Contact>().friends[senderId]!.friendRemark;
} else if ((msg['remarkInGroupChat'] as String).isNotEmpty) {
name = msg['remarkInGroupChat'];
} else {
name = msg['nickname'];
}
} else {
name = (msg['remarkInGroupChat'] as String).isNotEmpty
? msg['remarkInGroupChat']
: msg['nickname'];
}
String routeName = getIt.get<RouteState>().currentPathName;
if (!getIt.get<RouteState>().isVisible) {
NotificationAPI.showMessageNotifications(
senderId: senderId,
name: name,
avatar: avatar,
text: msg['text'] as String,
groupChatId: groupChatId,
);
} else if (routeName == 'Message') {
if (!getIt.get<RouteState>().query.containsValue(senderId)) {
NotificationAPI.showMessageNotifications(
senderId: senderId,
name: name,
avatar: avatar,
text: msg['text'] as String,
groupChatId: groupChatId,
);
}
} else if (routeName != 'Chat') {
NotificationAPI.showMessageNotifications(
senderId: senderId,
name: name,
avatar: avatar,
text: msg['text'] as String,
groupChatId: groupChatId,
);
}
}